Polyphosphate and siliceous granules in the macroscopic gametophytes of the red alga Porphyra purpurea (Bangiophyceae, Rhodophyta)
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| 024 | 7 | 0 | |a 10.1515/BOT.2004.032 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1515/BOT.2004.032 | ||
| 245 | 0 | 0 | |a Polyphosphate and siliceous granules in the macroscopic gametophytes of the red alga Porphyra purpurea (Bangiophyceae, Rhodophyta) |h [Elektronische Daten] |c [Thierry Chopin, Tania Morais, Ellen Belyea, Susan Belfry] |
| 520 | 3 | |a Phosphorylated fractions in tissues of starved and fresh plants of Porphyra purpurea, a representative of the Bangiophyceae, were analyzed over a 48 h incubation period in pulse-enriched seawater (15 uM phosphorus and 25 uM nitrogen). Compared to Chondrus crispus, a representative of the structurally and reproductively more complex Florideophyceae, P. purpurea takes up phosphorus much more actively, with a higher turnover rate, in which the orthophosphate fraction is predominant and acid-soluble and acid-insoluble polyphosphates are less significant as storage pools. Presence of cytoplasmic acid-insoluble polyphosphate granules was confirmed by transmission electron microscopy and energy dispersive X-ray microanalysis. The granules in P. purpurea were much smaller (20-110 nm in diameter) than those in C. crispus (around 1 um, but some larger than 2 um). Larger granules (290-310 nm) were observed in P. purpurea. They were more uniformly electron-opaque, without the reticulated/globular appearance of typical polyphosphate granules. Energy dispersive X-ray microanalysis demonstrated they were siliceous granules. To our knowledge, this is the first report in algae of such structures whose occurrence and metabolic role remain enigmatic. | |
| 540 | |a © Walter de Gruyter | ||
| 690 | 7 | |a Hydrobiology |2 nationallicence | |
| 690 | 7 | |a Mycology, fungi |2 nationallicence | |
| 690 | 7 | |a Botany & plant sciences |2 nationallicence | |
| 690 | 7 | |a Chondrus crispus |2 nationallicence | |
| 690 | 7 | |a polyphosphates |2 nationallicence | |
| 690 | 7 | |a Porphyra purpurea |2 nationallicence | |
| 690 | 7 | |a Rhodophyta |2 nationallicence | |
| 690 | 7 | |a siliceous granules |2 nationallicence | |
| 700 | 1 | |a Chopin |D Thierry |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | |
| 700 | 1 | |a Morais |D Tania |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | |
| 700 | 1 | |a Belyea |D Ellen |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | |
| 700 | 1 | |a Belfry |D Susan |u University of New Brunswick, Electron MicroscopyUnit, P.O. Box 45111, Fredericton, N.B., E3B 6E1,Canada |4 aut | |
| 773 | 0 | |t Botanica Marina |d Walter de Gruyter |g 47/4(2004-07-01), 272-280 |x 0006-8055 |q 47:4<272 |1 2004 |2 47 |o botm | |
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| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1515/BOT.2004.032 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Chopin |D Thierry |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Morais |D Tania |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Belyea |D Ellen |u University of New Brunswick, Centre for Coastal Studies and Aquaculture and Centre for Environmental and Molecular Algal Research, P.O. Box 5050, Saint John, N.B., E2L 4L5, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Belfry |D Susan |u University of New Brunswick, Electron MicroscopyUnit, P.O. Box 45111, Fredericton, N.B., E3B 6E1,Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Botanica Marina |d Walter de Gruyter |g 47/4(2004-07-01), 272-280 |x 0006-8055 |q 47:4<272 |1 2004 |2 47 |o botm | ||
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